Effective Technology

Substance

EPA maximum contaminant level

Effective Technology

Arsenic 5 (pentavalent)

0.01 mg/L

Distillation (up to 300 ppb)
Filtration (up to 50 ppb)
Reverse Osmosis (up to 50 ppb)
Reverse Osmosis (up to 300 ppb)

Arsenic 3 (trivalent)

0.01 mg/L

Distillation

Lead

0.015 mg/L

Distillation
Filtration
Reverse Osmosis

Perchlorates

N/A

Reverse Osmosis